Do they have bumps with them that itch? Do they itch alot at night more so than the day? Are they hard in areas, are they in the leg,arm,fingers,abdomen,groin area at all? If any of these sound like you you very well may have scabies..I would go to a dermatologist because it is HIGHLY contagious..Search on the internet and you will see what you have to go through to rid yourself and others in your household even if they show no signs at all they can still have it. They take 4-6 weeks to gestitate and lay eggs.
Here is a message board for this issue, It will really help you http://www.safe2use.com/scabiesboard/wwwboard.html